Whether you're deciding about the diameter of the corner or blunting a sharp corner with a miter cut, this simple gauge set will be super handy. Each gauge is laser cut from 1/4" plywood and features rounded corners for 2 1/4" to 3" diameters and the miter corner marker features 1.5" to 3.0" inch miters.

I use these for pencil and knife marks and the rounded edge guide is compatible with pattern bits when secured with double sided tape or similar adhesion.